/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.session.subscription;

import org.apache.tsfile.write.record.Tablet;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class SubscriptionSessionDataSets
    implements Iterable<SubscriptionSessionDataSet>, SubscriptionMessagePayload {

  private final List<SubscriptionSessionDataSet> dataSetList;

  public SubscriptionSessionDataSets(List<Tablet> tablets) {
    this.dataSetList = new ArrayList<>();
    tablets.forEach((tablet -> this.dataSetList.add(new SubscriptionSessionDataSet(tablet))));
  }

  @Override
  public Iterator<SubscriptionSessionDataSet> iterator() {
    return dataSetList.iterator();
  }

  public Iterator<Tablet> tabletIterator() {
    return dataSetList.stream().map((SubscriptionSessionDataSet::getTablet)).iterator();
  }

  @Override
  public void close() throws Exception {
    for (SubscriptionSessionDataSet dataSet : dataSetList) {
      dataSet.close();
    }
  }
}
